<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/doLogin" method="post">
   用户名：<input type="text" name="username"/> <br/>
    密码：<input type="password" name="password"/> <br/>
    <input type="submit" value="登录" />
   </form>
</body>
</html>